Clickable asp.net menu instead of hover

This is my control -

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Linq;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;

namespace ServerControl1
{
[DefaultProperty("Text")]
[ToolboxData("<{0}:ServerControl1 runat="server">")]
public class ServerControl1 : Menu
{
[Bindable(true)]
[Category("Appearance")]
[DefaultValue("")]
[Localizable(true)]
public string Text
{
get
{
String s = (String)ViewState["Text"];
return ((s == null) ? "[" + this.ID + "]" : s);
}

set
{
ViewState["Text"] = value;
}
}

protected override void Render(HtmlTextWriter writer)
{

StringBuilder stringBuilder = new StringBuilder();
System.IO.StringWriter stringWriter = new System.IO.StringWriter(stringBuilder);

HtmlTextWriter htmlWriter = new HtmlTextWriter(stringWriter);
base.Render(htmlWriter);

string html = stringBuilder.ToString();
html = html.Replace("onmouseover=\"Menu_HoverStatic(this)\"", "onclick=\"Menu_HoverStatic(this)\"");

writer.Write(html);

}

}
}